scholarly journals HISTOLOGY AND HISTOCHEMICAL CHARACTERISATION OF THE STOMACH STRUCTURE OF THE ANTARCTIC FISH Notothenia rossii (RICHARDSON, 1844) UNDER CONDITIONS OF THERMAL STRESS

2016 ◽  
pp. 83-87
Author(s):  
Priscila Krebsbach Kandalski ◽  
Axel Helmut Rulf Cofré ◽  
Cintia Machado ◽  
Maria Rosa Dmegeon Pedreiro de Souza ◽  
Flávia Baduy Vaz da Silva ◽  
...  
Keyword(s):  
Thermal Stress ◽  
Antarctic Fish ◽  
The Antarctic ◽  
Notothenia Rossii

Interaction of warm acclimation, low salinity, and trophic fluoride on plasmatic constituents of the Antarctic fish Notothenia rossii Richardson, 1844

2013 ◽  
Vol 39 (6) ◽  
pp. 1591-1601 ◽  
Author(s):  
E. Rodrigues ◽  
M. Feijó-Oliveira ◽  
G. S. Vani ◽  
C. N. K. Suda ◽  
C. S. Carvalho ◽  
...  
Keyword(s):  
Antarctic Fish ◽  
Low Salinity ◽  
Warm Acclimation ◽  
The Antarctic ◽  
Notothenia Rossii

scholarly journals INTERACTIVE EFFECTS OF WARM ACCLIMATION, LOW SALINITY, AND TROPHIC FLUORIDE ON THE LIVER METABOLISM OF THE ANTARCTIC FISH Notothenia rossii

2016 ◽  
pp. 88-92
Author(s):  
Edson Rodrigues ◽  
Mariana Feijó-Oliveira ◽  
Gannabathula Sree Vani ◽  
Cecília Nahomi Kawagoe Suda ◽  
Lucélia Donatti ◽  
...  
Keyword(s):  
Antarctic Fish ◽  
Liver Metabolism ◽  
Interactive Effects ◽  
Low Salinity ◽  
Warm Acclimation ◽  
The Antarctic ◽  
Notothenia Rossii

scholarly journals Photoperiod and feeding behavior of the Antarctic fish Notothenia rossii (Perciformes: Nototheniidae) and functional morphology of chemical and visual sensory structures used in foraging

2008 ◽  
Vol 25 (2) ◽  
pp. 254-262 ◽  
Author(s):  
Lucélia Donatti ◽  
Tânia Zaleski ◽  
Patrícia Calil ◽  
Edith Fanta
Keyword(s):  
Antarctic Fish ◽  
Photoreceptor Cells ◽  
Sensory Epithelium ◽  
Sensory Structures ◽  
Gobionotothen Gibberifrons ◽  
Chemical Perception ◽  
The Antarctic ◽  
Number Of Individuals ◽  
Olfactory Rosette ◽  
Notothenia Rossii

The influence of photoperiod on the ability of Notothenia rossii Richardson, 1844 to detect prey was studied experimentally. In 12L/12D there was the highest number of individuals stimulated visually and chemically while in 24D chemical perception was the same as that observed in 12L/12D, the latter being lower than in 24L. The ultrastructure of chemo- and photo-sensory structures, involved in the detection of food, was studied. The photoreceptor cells of the retina are single and double cones, and rods. Taste buds were concentrated in the central part of upper and lower lips. Their shape is even, but the size is variable. The olfactory rosette has a sensory and a non-sensory epithelium, being rich in different mucosubstances. The conclusion was that in different photoperiods there is a difference in the response to visual and chemical stimulation for prey detection and that all sensory systems are more stimulated in periods of more luminosity, mainly when there is an alternation between light and dark periods. Sensory organs are complex when compared to some other Antarctic fish such as Gobionotothen gibberifrons Lönnberg, 1905 and Ophthalmolycus amberensis Tomo, Marshoff & Torno, 1977 but similar to those of N. coriiceps Rchardson, 1844.

Egg-shell morphology of the Antarctic fish, Notothenia rossii Richardson, and the distribution and abundance of pelagic eggs at South Georgia

1996 ◽  
Vol 8 (3) ◽  
pp. 267-271 ◽  
Author(s):  
Martin G. White ◽  
Richard R. Veit ◽  
Anthony W. North ◽  
Ken Robinson
Keyword(s):  
Electron Microscopy ◽  
Antarctic Fish ◽  
Shell Morphology ◽  
Fish Eggs ◽  
South Georgia ◽  
Pelagic Eggs ◽  
Egg Shell ◽  
The Antarctic ◽  
Notothenia Rossii ◽  
Scanning Electron

During winter research cruises to South Georgia (1983 and 1993) fish eggs were abundant in the neuston. Examination of the external sculpturing and the micropyle morphology of the eggs collected during 1993 using scanning electron microscopy indicated that these were fertilized ova of Notothenia rossii marmorata. A comparison between the eggs of N. rossii from Iles Kerguelen and South Georgia showed these to have a similar surface morphology but a difference in the structure of the micropyle. In 1993, the abundance of fish eggs in the neuston varied from 0-116 eggs m−3 with an average of 4.5 eggs m−3. During 1983, eggs were most abundant in the neuston but at lower average levels (0.04 eggs m−3, range 0–1.17 eggs m−3) and these were distributed from the surface to >380 m.

scholarly journals Metabolic shifts in the Antarctic fish Notothenia rossii in response to rising temperature and PCO2

2012 ◽  
Vol 9 (1) ◽  
pp. 28 ◽  
Author(s):  
Anneli Strobel ◽  
Swaantje Bennecke ◽  
Elettra Leo ◽  
Katja Mintenbeck ◽  
Hans O Pörtner ◽  
...  
Keyword(s):  
Antarctic Fish ◽  
The Antarctic ◽  
Notothenia Rossii

Effect of gradual temperature increase on the carbohydrate energy metabolism responses of the Antarctic fish Notothenia rossii

2019 ◽  
Vol 150 ◽  
pp. 104779 ◽  
Author(s):  
Angela Carolina Guillen ◽  
Marcelo Eduardo Borges ◽  
Tatiana Herrerias ◽  
Priscila Krebsbach Kandalski ◽  
Elen de Arruda Marins ◽  
...  
Keyword(s):  
Energy Metabolism ◽  
Temperature Increase ◽  
Antarctic Fish ◽  
The Antarctic ◽  
Notothenia Rossii

Hematological Characteristics of the Antarctic Fish

2008 ◽  
Vol 44 (3) ◽  
pp. 66-74 ◽  
Author(s):  
V. M. Voytsits'kyi ◽  
N. K. Rodionova ◽  
S. V. Khyzhniak ◽  
L. G. Manylo
Keyword(s):  
Antarctic Fish ◽  
The Antarctic

scholarly journals Not Frozen in the Ice: large and Dynamic Rearrangements in the Mitochondrial Genomes of the Antarctic Fish

2021 ◽  
Author(s):  
Chiara Papetti ◽  
Massimiliano Babbucci ◽  
Agnes Dettai ◽  
Andrea Basso ◽  
Magnus Lucassen ◽  
...  
Keyword(s):  
Gene Order ◽  
Hot Spot ◽  
Mitochondrial Gene ◽  
Antarctic Fish ◽  
Purifying Selection ◽  
Compositional Bias ◽  
Mitochondrial Genomes ◽  
Notothenioid Fish ◽  
Antarctic Notothenioids ◽  
The Antarctic

Abstract The vertebrate mitochondrial genomes generally present a typical gene order. Exceptions are uncommon and important to study the genetic mechanisms of gene order rearrangements and their consequences on phylogenetic output and mitochondrial function. Antarctic notothenioid fish carry some peculiar rearrangements of the mitochondrial gene order. In this first systematic study of 28 species, we analysed known and undescribed mitochondrial genome rearrangements for a total of eight different gene orders within the notothenioid fish. Our reconstructions suggest that transpositions, duplications and inversion of multiple genes are the most likely mechanisms of rearrangement in notothenioid mitochondrial genomes. In Trematominae, we documented an extremely rare inversion of a large genomic segment of 5300 bp that partially affected the gene compositional bias but not the phylogenetic output. The genomic region delimited by nad5 and trnF, close to the area of the Control Region, was identified as the hot spot of variation in Antarctic fish mitochondrial genomes. Analysing the sequence of several intergenic spacers and mapping the arrangements on a newly generated phylogeny showed that the entire history of the Antarctic notothenioids is characterized by multiple, relatively rapid, events of disruption of the gene order. We hypothesised that a pre-existing genomic flexibility of the ancestor of the Antarctic notothenioids may have generated a precondition for gene order rearrangement, and the pressure of purifying selection could have worked for a rapid restoration of the mitochondrial functionality and compactness after each event of rearrangement.

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